What is error 404 not found 1 normally happens when the windows system crashes and stucks to a certain extent. That will seriously affect our use of the computer, so we have to study how to deal with it.


In most cases, you will experience:

Mostly, you may experience program lock-ups, sluggish PC performance, system crash, blue screen errors, startup or shutdown error, and installation issues.

About the symptoms

When you try to activate a Windows installation (client or server), you receive one or more error messages that resembles the following:

"Cannot register what is error 404 not found 1."
Causes of what is error 404 not found 1?

There may be several causes of this error including that:

    The most important reason for what is error 404 not found 1 is out-of-date or corrupt driver software. The driver program may be not compatible with the mainboard. Problems with the BIOS of the computer may also cause this what is error 404 not found 1 to appear.what is error 404 not found 1 is caused by|due to} misconfigured system files in your windows operating-system.
Professional Solution

1.Click Computer on your desktable and right click Disk C to select Properties.

2.Click Disk Cleanup, you'll see a window just as right, this process need some minutes.

3.Under Disk Cleanup there are Files to delete, tick the files you don't need to free pc space, finally click OK.

Another Method to Fix this Problem: what is error 404 not found 1

SmartPCFixer™ is a full featured and easy-to-use system optimization tool, with it, you can: clean windows registry, remove cache files, fix errors, defrag disk, update windows, download dll, find programs to open file extensions and 20+ other system tools.

You can now download the repair tool and fix error what is error 404 not found 1 with one click.
Fix the error what is error 404 not found 1 following 3 steps.

Step 1: Download & Run SmartPCFixer - Download Now

Step 2: Open SmartPCFixer and Click "Quick Scan" to analyze your System(Normally, the software performs an automatic scan).

Step 3: Click "Fix All" button when the scan is complete, then the problem will be resolved

About Us

LionSea Software Co, Ltd is a modern enterprise integrating science and technology, industry and trade. It has a technology team of high qualities and first-class employees, including post-doctors with ability in business, management and software development etc. Our slogan is: " User First, Product Excellent, Brave in Innovation and Never Stop Improving". Facing huge potential in market and heated competition at home and abroad, we do our best to work hard and make high-quality software with dependable attitude. We do our best improve the management level and product quality steadily and to guarantee the best quality to users.


"Computer or system problems are very easy to fix for SmartPCFixer, one-click can be resolved, before the system is always pop-up error pop-up window, and then the computer crashes, with SmartPCFixer scan many problems, and then repair them and the pop-up window no longer appears."

---- Allen.S

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